论文标题
源自SOHO/SUMER太阳磁盘观测的静sun氢-Lyman-Alpha线轮廓
Quiet-Sun hydrogen Lyman-alpha line profile derived from SOHO/SUMER solar-disk observations
论文作者
论文摘要
氢基因的Lyman-Alpha光谱线中的太阳辐射在发电机和冠状结构的照明中起着重要作用，例如突出，Spicules，Spicules，Spicules，Spicules，Spicules，色层纤维，冠状质量喷射的核心和太阳风。此外，对于研究地球，地球的电离层以及行星，月球和彗星的大气的研究非常重要。我们得出了一个参考静态的Lyman-Alpha光谱谱，该光谱谱是在太阳能活动的最低限度的情况下代表了来自太阳能磁盘的Lyman-Alpha辐射。该轮廓可以作为色球和冠状结构的辐射转移模型的入射辐射边界条件。由于Lyman线中的太阳辐射随着时间的流逝不是恒定，但随着太阳周期的变化很大，因此我们为入射辐射Lyman线轮廓（Lyman-Alpha和较高线）适应特定日期提供了一种方法。此外，我们分析了入射辐射的变化如何影响辐射转移建模产生的合成光谱。为了考虑到与太阳周期的Lyman-Alpha变化，我们使用了Lisird Composite Lyman-Alpha $ index。为了估计莱曼线中入射辐射变化对辐射转移模型结果的影响，我们使用了2D突出的良好结构模型。对入射辐射中变化的影响的分析表明，合成光谱受到入射辐射边界条件的修饰很大的影响。尽管太阳盘的Hα辐射与太阳周期不变，但氢Hα线也可能受到很大影响。
The solar radiation in the Lyman-alpha spectral line of hydrogen plays a significant role in the illumination of chromospheric and coronal structures, such as prominences, spicules, chromospheric fibrils, cores of coronal mass ejections, and solar wind. Moreover, it is important for the investigation of the heliosphere, Earth's ionosphere, and the atmospheres of planets, moons, and comets. We derive a reference quiet-Sun Lyman-alpha spectral profile that is representative of the Lyman-alpha radiation from the solar disk during a minimum of solar activity. This profile can serve as an incident radiation boundary condition for the radiative transfer modelling of chromospheric and coronal structures. Because the solar radiation in the Lyman lines is not constant over time but varies significantly with the solar cycle, we provide a method for the adaptation of the incident radiation Lyman line profiles (Lyman-alpha and higher lines) to a specific date. Moreover, we analyse how the change in the incident radiation influences the synthetic spectra produced by the radiative transfer modelling. To take into account the Lyman-alpha variation with the solar cycle, we used the LISIRD composite Lyman-alpha$ index. To estimate the influence of the change in the incident radiation in the Lyman lines on the results of radiative transfer models, we used a 2D prominence fine structure model. The analysis of the influence of the change in the incident radiation shows that the synthetic spectra are strongly affected by the modification of the incident radiation boundary condition. The hydrogen H alpha line can also be considerably affected, despite the fact that the H alpha radiation from the solar disk does not vary with the solar cycle.
